Yellowstone is home to relatively 200 species of creatures, from terrifying bears to bald eagles. Bison, wolves, bears, elk and nearly 60 other species of mammals bat their natural niche. We are also home to relatively 300 species of catcalls, 16 species of fish, six species of reptiles and 4 species of amphibians.                                         

How is it sustained?

The National Park Service’s thing is to maintain the ecological processes that sustain these mammals and their territories while covering the changes taking place in their populations. Seasonal or migrant movements take numerous species across the demesne boundary where they're subject to different operation programs and uses of land by humans. Understanding the links between climate change and these motorists will be critical to informing the ecology and operation of Yellowstone’s wildlife in the times to come.